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Old June 20th, 2018, 09:41 AM
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melsg5 melsg5 is offline
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use a voltmeter to determine if you are getting a signal from the Tach terminal of the HEI. If you have to pull the tachometer you drop the lower AC ducts, remove the radio and support bracket, disconnect bulbs and power feed. Loosen the 3 retaining screws rotate the tachometer in a clockwise direction and remove. Those are the instructions from the 1970 factory service manual. Good luck.
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